Effective field theory of anisotropic inflation and beyond

Jinn Ouk Gong; Toshifumi Noumi; Gary Shiu; Jiro Soda; Kazufumi Takahashi; Masahide Yamaguchi

doi:10.1088/1475-7516/2020/08/027

Effective field theory of anisotropic inflation and beyond

Jinn Ouk Gong, Toshifumi Noumi, Gary Shiu, Jiro Soda, Kazufumi Takahashi, Masahide Yamaguchi

Department of Science Education

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

We develop an effective-field-theory (EFT) framework for inflation with various symmetry breaking pattern. As a prototype, we formulate anisotropic inflation from the perspective of EFT and construct an effective action of the Nambu-Goldstone bosons for the broken time translation and rotation symmetries. We also calculate the statistical anisotropy in the scalar two-point correlation function for concise examples of the effective action.

Original language	English
Article number	027
Journal	Journal of Cosmology and Astroparticle Physics
Volume	2020
Issue number	8
DOIs	https://doi.org/10.1088/1475-7516/2020/08/027
State	Published - Aug 2020

Bibliographical note

Publisher Copyright:
© 2020 IOP Publishing Ltd and Sissa Medialab.

Keywords

Inflation
Power spectrum

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10.1088/1475-7516/2020/08/027

Cite this

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abstract = "We develop an effective-field-theory (EFT) framework for inflation with various symmetry breaking pattern. As a prototype, we formulate anisotropic inflation from the perspective of EFT and construct an effective action of the Nambu-Goldstone bosons for the broken time translation and rotation symmetries. We also calculate the statistical anisotropy in the scalar two-point correlation function for concise examples of the effective action.",

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AU - Takahashi, Kazufumi

AU - Yamaguchi, Masahide

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AB - We develop an effective-field-theory (EFT) framework for inflation with various symmetry breaking pattern. As a prototype, we formulate anisotropic inflation from the perspective of EFT and construct an effective action of the Nambu-Goldstone bosons for the broken time translation and rotation symmetries. We also calculate the statistical anisotropy in the scalar two-point correlation function for concise examples of the effective action.

KW - Inflation

KW - Power spectrum

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Effective field theory of anisotropic inflation and beyond

Abstract

Bibliographical note

Keywords

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